Dolichogryllus ugandaensis, Yuen & Chen & Yuen & Liu & Leung & Ko & Chan & Somani & Herrmann & Jung & Tokas & Croghan & Traxer & Chiu & Chew & Teoh & Gauhar & Li & Ng, 2020

Dolichogryllus ugandaensis View in CoL sp. nov.

( Figs 1–4, 13–15, 21–24)

Holotype. Male, Uganda, Western Region, Bundibugyo Distr., environs of Semuliki National Park , ~ 500 m, forest, at light, 12–14.III.2020, A. Gorochov, G. Irisov ( ZIN).

Paratype. One male, Uganda, Western Region, Bushenyi Distr., environs of Kalinzu Nature Reserve , ~ 1000 m, forest, at light, 23–28.II.2020, A. Gorochov, G. Irisov ( ZIN) .

Description. Male ( holotype). Size and colouration of body similar to those of D. camerunensis Bolivar, 1910 but with following characteristic features: epicranium light yellowish grey with three greyish brown longitudinal bands on hind half of dorsum, a pair of thinner and slightly lighter longitudinal lateral stripes behind eyes, dark greyish brown ventral parts of eyes, greyish brown spots on genae, somewhat lighter areas near (above) these spots, and darkened pattern under both rostral apex and antennal cavities ( Figs 1, 2); antennae with yellowish scape having short darkish line on dorsal surface and large dark greyish brown area on ventral surface, and with greyish pedicel and flagellum having rather numerous small whitish spots; mouthparts also light yellowish grey with sparse darkish spots on clypeus, maxillae, palpi and mandibular bases ( Fig. 1); pronotum light yellowish grey with dark greyish brown lateral lobes and characteristic pattern on disc ( Fig. 2); tegmina light greyish, semitransparent, with dark and whitish marks ( Figs 13, 14); legs also light with dark and darkish spots on fore and middle femora and tibiae, with reticular darkish pattern on proximal two thirds of dorsal and outer surfaces of hind femur, with dark ventral subapical spot on this femur, with slightly darkened apical part of hind femur and most part of hind tibia, and also with spotted tarsi of all legs; tergites of pterothorax and abdomen light greyish brown with yellowish anal plate and dorsal part of anterior half of abdominal tergites (but anal plate also with a pair of darkish posterolateral spots and darkish apical transverse stripe; Fig. 15); venter of body (including genital plate) and cerci yellowish with sparse darkish dots on cerci. Head dorsoventrally depressed, with slightly concave dorsal surface between eyes; rostrum moderately narrow (scape approximately 1.5 times as wide as rostrum between antennal cavities) and distinctly angular in profile; eyes large, almost 3.8 times as high as ventral part of epicranium under each antennal cavity ( Fig. 1). Pronotum transverse, slightly narrowing to head ( Fig. 2), with moderately low lateral lobes having roundly truncated ventral edges; metanotal gland with rather deep central concavity and small V-shaped (reversed) process in its centre having both branches thin and located very near each other ( Fig. 3). Tegmina long, distinctly protruding beyond abdominal apex, with venation as in Figs 13 and 14; hind wings much longer than tegmina, transparent; fore and middle legs rather short; fore tibia somewhat inflated near base, with rather large oval inner tympanum, and with well developed and slit-like but not very narrow inner tympanum; hind tibia with five inner and six out- er rather short dorsal spines in distal half as well as with more numerous small denticles mainly in proximal half; hind basitarsus with two inner and three outer dorsal denticles, except for a pair of apical spurs almost reaching middle of apical tarsal segment. Anal plate as in Fig. 15; genital plate approximately three times as long as anal plate, with narrowly rounded apex having narrow posteromedian notch and both lobules around it located in vertical plane ( Fig. 15); genitalia very similar to those of D. camerunensis (see Gorochov, 2005: figs I: 3–5), but epiphallic ectoparameres slightly arcuate (not slightly S-shaped) and with somewhat narrower distal parts in profile, rachis with posterodorsal lobe having less deep posteromedian notch, each posteroventral (lateral) lobe of rachis somewhat higher and having two larg- er projections, heavily sclerotised rachial ectoparameres more strongly hooked in distal half and acute (not narrowly rounded) at apex, and formula (= mold of spermatophore attachment plate) with somewhat longer median sclerotised ribbon running forward from this formula ( Figs 21–23); spermatophore as in Fig. 24.

Variations. Second male with dark spots on inner surface of fore femur clearly smaller, metanotal gland somewhat longer (see Figs 3 and 4), and genitalia with epiphallic ectoparameres slightly wider and more curved upwards/medially as well as with rachial ectoparameres almost intermediate between those of holotype and D. camerunensis .

Female unknown.

Length in mm. Body 15–16; body with wings 21–23; pronotum 2.5–2.6; tegmina 16–16.5; hind femora 8.8–9.5.

Comparison. The new species differs from D. camerunensis in the absence of a light medi- an epicranial area under the rostral tubercle, less dark (with a light ventral half) lateral pronotal lobes, a reticularly spotted (not uniformly light) most part of the hind femur outer surface, a distinctly smaller concavity of the metanotal gland having a clearly larger (wider) V-shaped process with a much wider space between its branches (see Figs 3, 4 and 5). From D. infuscatus Chopard, 1967 , it is distinguished by a larger mirror and a longer apical area in the male tegmen.

Etymology. The new species is named after the Republic of Uganda.